an engineer wishes to design a rectangular tv screen with an area of 220 square inch and a diagonal of 21 inch. what dimension should be used?
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Answer:
b= 15.34 & h=14.34
Step-by-step explanation:
substitute eqt 2 to equation 1;
let b²=x
use quadratic equation to solve for x
therefore x=235.34 , 205.66
b=√235.34 =15.34
b=√205.66=14.34
therefore b= 15.34
b= 15.34 h=14.34